Hoop sizing and clamping device.



I... GIBBS.

HOOP SIZING AND GLAMPING DEVICE.

nrmcnxon rum) JAN. 10. 1901.

Patented N0v.23, 1909.

I Am I IQ I I uwnaw. a. GRAHAM ca. PHOTD-UTMOQRAFNERS. WASHINGTON, n. c

UNITED STATES PATENT OFFICE.

LEWIS GIBBS, OF CANTON, OHIO, ASSIGNOR 'IO T HE GIBBS MANUFACTURINGCOMPANY, OF CAN'I'ON, OHIO, A CORPORATION OF OHIO.

HOOP SIZING AND CLAMPING DEVICE.

Specification of Letters Patent.

Patented Nov. 23, 1909.

Application filed January 10, 1907. Serial No. 351,638.

To all whom 'it may concern:

Be it known that I, LEWIS GIBBS, a citizen of the United. States,residing at Canton, in the county of Stark and State of @1110, haveinvented certain new and useful Improvements in Hoop Sizing and ClampingDevices; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to the annexeddrawing, making a part of this speclfication, and to the figures ofreference marked thereon, in which Figure l is a top view showing theclamping and sizing parts in proper relative position with reference toeach other, showing the movable clamping heads or blocks separated ormoved away from the sizing disk. Fig. 2 is a top View showing a hoopproperly sized and clamped. Fig. 3 1s a transverse section .on line 33,Fig. 1 looking toward the top of the sheet. Fig. 4c is a section on line4t4: looking toward the left hand side of the sheet. Fig. 5 is a Viewshowing the clamp and sizing blockoperating levers. Fig. 6 is atransverse section of the tread bars and a section of the clamping platetread bar guide.

The present invention has relation to hoop sizing and clamping devicesand it conslsts in the novel arrangement, hereinafter described andparticularly pointed out in the claims.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawing.

In the accompanying drawing, 1 represents the bed plate which issupported in proper elevation by a bench or frame as desired. The bedplate 1 is provided with a central opening 2 in which central opening islocated the disk or block 3, which disk or block is formed of a size andshape corresponding with the size of and shape of the inner surface ofthe hoop, when the hoop has been brought to its proper size and thesevered ends of the hoop brought into position to be connected togetherby any suitable adhesive substance and temporarily clamped by means ofthe clamping device 4.

To the bed plate 1 are attached the guide bars 5 and 6, which guide barsare connected by means of the screws 7 or their equivalents, said guidebars being provided with the beveled or grooved inner faces, whichbeveled or grooved inner faces 8 are for the purpose of holding andguiding the sizing disk or sizing head 3 and are so formed for thepurpose of providing a means for producing a uniformpressure as betweenthe sizing disk or head 3, and the clamping blocks or plates 9. Belowthe bed plate 1 are located the L shaped lever or hell cranks 10, whichare pivotally attached to the flanges 11 or their equivalents, saidflanges being secured or formed integral with the bed plate 1. The uppermembers of the L shaped levers or bell cranks 10 are extended throughthe slots 12 formed in the bed plate 1, and into the openings or slots13 by which arrangement a pivotal connection is brought about as betweenthe L shaped levers 10 and the plates or blocks 9.

To the inner ends of the L shaped levers 10 are pivotally attached thelinks 14:, which links are extended downward and their bottom or lowerends pivotally attached to the top or upper end of the tread bar 15,which tread bar is extended downward and is pivotally attached to thefoot lever or tread 16, which foot lever or tread is pivoted at one endto the floor or other place by means of the flange 17 or its equivalent.

It will be understood that when the foot tread 16 is pressed downward itwill move or pull the tread bar 15 downward, which in turn moves thelinks 14 downward carrying with them the inner ends of the L shapedlevers '10, thereby bringing the upper ends of said L shaped levers 10toward each other and by reason of the connection of said L shapedlevers 10 with the movable plate 9, said movable plates are moved uponthe bed plate toward the sizing disk or block 3. Prior to the time theblocks 9 are brought toward the disk 3 the ring designed to be clampedwhile in an open or disconnected condition is placed in the positionillustrated in Fig. 1, after which the foot tread 16 is brought down andby reason of the connections between the foot tread and the clamp blocks9 said clamping blocks are forced toward the disk 3, which movementbrings the hoop to its proper size and shape and at the same time forcesor brings the disconnected ends of the ring into proper position, afterwhich the clamp 4 is placed upon the hoop at the point where the endsare lapped and the clamp permitted to remain on the hoop until thelapped ends have become properly set or held together and connected bymeans of any adhesive sub stance, after which the clamp can be re moved.

It will be understood that in use the hoop should be brought into such aposition that it will be properly clamped and sized and in order totemporarily hold the hoop and at the same time force any portion of thehoop that may extend above the tops of the sizing disk 3, or pressingplates or blocks 9, the fingers 18 are provided, which fingers areslightly curved upward so that they will engage the upper edge of thehoop and as the plates or blocks 9 are moved toward the block or disk 3they will force the hoop down and upon the bed plate 1, at all points,or in other words the fingers serve to bring the hoop into the samehorizontal plane as that of the disk or head 3 and the movable clampingplates or blocks 9.

It will be understood that after the hoop has been properly sized andclamped as illustrated in Fig. 2, it will be located around and incontact with the sizing block or head 3 and will remain in its sizedposition by reason of the lapped ends being properly set or heldtogether and connected by any suitable adhesive substance after themovable plates or blocks 9 are brought into the position illustrated inFig 1.

In order that the hoop may be easily released and free to be removed forthe re ception of another hoop the sizing disk 3 is moved downward andbrought into a horizontal plane below the upper surface of the bed plate1, thereby freeing the hoop. The downward movement of the block 3 isbrought about by means of a rod 19, which rod is fixed to the disk orblock 3 in any convenient and well known manner and toits bottom orlower end is connected the tread bar 20, which tread bar is pivotallyattached to the foot lever 21, which foot lever is pivoted insubstantially the same manner as the foot lever 16, said levers 21 and16 being preferably located side by side as illustrated in Fig. 3. Therod 19 is located through the guide 22, which guide is held in fixedposition and proper location by means of the bars 23, which bars aresecurely attached in any convenient and well known manner to the bedplate 1 or its equivalent.

For the purpose of automatically elevating the disk or block 3 after ithas been lowered to release the hoop the spring 24 is provided, whichspring is connected at its bottom or lower end to the foot lever 21 andits top or upper end to the bed plate 1 or its equivalent. A spring 25is also provided and is attached in a similar manner as the spring 24and is for the purpose of automatically moving the clamping plates orblocks 9 away from the sizing disk or block 3, when the foot lever 16 isreleased.

It will be understood that in order to give an easy movement to theplate or blocks 9 the guide bars 5 and 6 should be so adjusted thatlittle friction will exist as between the plates or blocks 9 and theguide bars 5 and 6 should be so adjusted that little friction will existas between the plates or blocks 9 and the guide bars 5 and 6 and for thepurpose of providing for this adjustment they are provided with theslots 26,- through which slots the screws 27 are passed and after theplates 5 and 6 have been brought into the proper adjustment the screws27 are set so as to properly clamp the guide bars 5 and 6 to the bedplate 1.

For the purpose of providing room for the proper setting of the clamp 4the disk or block 3 is provided with the recess 28 and the overlappedparts of the guide flange 6 cut away as illustrated in Figs. 1 and 2,thereby providing sufiicient room to properly clamp the clamp l.

It will be understood that the fingers 18 should not be extended beyondthe concaved such an extent that they will interfere with the placing ofthe hoops in position to be sized and clamped but should be so extendedthat as the clamping blocks or plates approach each other the fingerswill come into action in advance of the sizing and clamping plates orblocks 9.

I have illustrated the invention as applied to the formation of roundhoops, but the shape and size of the hoops when finished may be of anydesired shape and any desired size and the clamping parts formed of asize and shape to correspond with the size and shape of the hoop whenproperly formed and clamped.

For the purpose of better holding and guiding the tread bar 15 the clip29 is provided, which clip is connected to the tread bar 20, and ofcourse moves up and down with the tread bar 20, but the tread bar 15 isfree to move up and down independent of the clip.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is

1. In a hoop sizing and clamping device the combination of a bed plateprovided with guide ways, sizing blocks slidably mounted in the guideways, the inner edges of said sizing blocks being curved to fit a hoopto be sized, a disk located intermediate the slidable sizing blocks,means for moving the disk at right angles to the movement of the sizingblocks, fingers having their free ends turned upwardly and secured tothe slidable sizing blocks, the turned up ends of the fingersoverhanging the edge of the slidable blocks, means for operating theslidable blocks, and means for independently operating the disk.

2. In a hoop sizing and clamping device, the combination of a bedprovided with guide ways, a pair of slidable sizing blocks operating inthe guide Ways said sizing blocks being curved on their inner edges tosubstantially encircle a hoop, a disk operating in an opening formed inthe bed and project-ing above the latter in a plane with the upper facesof the slidable blocks, a crank lever for each slidable block a verticalrod connected to the disk, a treadle connection attached to the rod, andmeans for operating the crank levers to cause movement of the slidableblocks independent of the movement of the disk.

3. In a hoop sizing and clamping device, the combination of a bed plateprovided with guide Ways, a pair of slidable sizing blocks operating inthe guide Ways, and formed with seats, the inner ends of the slidingsizing blocks being curved to embrace a hoop, a disk operating in anopening formed in the bed plate, and normally projecting above the planeof the latter, a treadle connection of two Witnesses.

LEWIS GIBBS. Witnesses:

F. WV. PREYER, A. J. GIBBS.

